Automatic stop for talking machines



E. E. WIFORD. AUTOMATIC STOP FOR TALKING MACHINES. APPLICATION FILED MAYI0, 1920.

1 404 07 Patented Ja'n..17, 1922.

2 SHEETSSHIEET 1.

. ZZZ W INVENTOR M M ATTORNEY QM w m E; E. WIFORD'. AUTOMATIC STOP FORTALKING MACHINES.

APPLICATION FILED MAY I0, 1920. 1,404,078, Patented Jan. 17, 1922.

2 SHEETSSHEET 2.

5 Ward mvzwroa A'rroRNEY PATENT OFFICE.

, ELZA n. wironn, or SIDNEY, onto.

AUTOM ATIC STOP FOR TALKING MACHINES.

Specification of Letters Patent.

Patented Jan;.17, 1922.

Application filed May 10, 1920. Serial No. 380,205.

To all whom, it may concern:

citizen of the United States, residing atSidney, in the county of Shelbyand State of Ohio, have invented new anti useful Tmprovements inAutomatic Stops for. Talking Machines, of which the following is aspecification. V V

This inventionrelates to automatic stops for talking machines, and.comprehends a construction which oan be accurately set in a minimum oftime, the construction being simple butyet positive of operation for thepurpose intended.

The nature and advantages of the invention will bebetter understood whenthe. following detail description is taken in connection withtheaccompanying drawings, the invention residing in the construction,combination and arrangement of parts as claimed. i I

In the drawings forming part of this application like numeralsofreference indicate similar parts in the several. views, and wherein: 1

Figure 1 is a plan view of atalking ma chine showing the turn table bydotted lines, and the automatic stop mechanism arranged therebeneath. VV T Figure 2 is a fragmentary view showing the set position of the stopmechanism.

F igure3 is a sectional View taken on line 33 of Figure 1.

. Figure 4 is a-detail view of the trip element.

Referring to the drawings in detail, A indicatesthe turntable of themachine, B the tone arm, and C thereproducer.

The automatic stop ;mecha nism forming the subject matter of myinvention com prises a base plate indicated at 10 and adapted to besecured to the machine in any suitable manner, but beneath theturn-table A. Pivoted as at 11 upon the base plate -10 is the combinedstarting and setting lever 12, this lever being manually'operable inset,- ting the mechanism, and for which purpose it projects, anappreciable distance beyond the periphery of the-turntable A. v This.le-

ver is formed to provide a segmental end portiOIi 13Wliioh, reposes uponthe base :plate 10, and this portion cooperates with a pivoted latchelement 14 for holdingthe mechanism in set positions A brake of usualconstruction indicated M15 is mounted upon the lever 12 at points whereit normally contacts the flange of the turntable A as clearlyillustrated in Figure 1. The latch element 11 is curved to correspondwith the curvature of the outer edgeot the segmental portion of thelever 12,.theelement lt being pivoted upon the base plate 10 as at 16. Acoiled spring 17 connects the latch element with the segmental portionof the lever 12, this spring functioning to holdthe parts operativelyassociated. The latch'element 1 L visprovided with a tooth or lug'18which is engaged by a similar tooth or lug '19 formed on the segmentalportion of the lever 12, when the parts are in set position. Pivotedupon the free extremity of the latch element 14:, is a finger. 20 havinga-cam like portion 21. .for the purpose to be presentl described. ThefingerQO is normally positioned in the manner shown in-Figure 1, and ismoved to its set position through the instrumentality of a pin 22carriedby the segmental portion of the lever 12. A trip element for the finger20 is indicated at 24 and is secured to the tone armB. 'The trip elementis of the configuration illustrated in Figure 4, and includes adepending portion 24 which is adaptedto contact the finger 20 tooperatethe automatic stop for the machine. I

Normally, the parts are arranged int-he manner shown in Figural, andsubsequentto the placing oi a record upon the turntable, the needleotthereproducerwis arranged in the innermost groove of the record. This ofcourse, swings the tone arm upon its pivot and positions the tripelement MC-with respect to the center of the record. The combinedstarting and setting lever 12 "is now moved upon its pivot in adirection tospace the brake from the flange of the turntable, thuspermitting the. turntable to rotate. When the leverlQ isv moved in thisdirection, the pin 22 is moved into engagement with the cam-like portion21 of the finger 20, moving the finger upon its pivotinto contactingBefore the lever 12 is released, the reproducer is moved upon theperiphery of the record and the needle placed in the entermost soundgroove of the record. "Upon restrumentality of the spring connecting thesame, and consequently the-teeth 18-and 19 respectively contact eachother and thereby hold the mechanism ina set position and the brakespaced from the flange of the turntable. As the needle moves toward thecenter of the record, the trip 24 on its tone arm approachesthefinger20, and when brought in contact with the finger 20, moves the latterfrom its set position in a direction of the brake. This finger continuesin its movement in this direction until the cam like portion 21 thereofcontacts the pin 23, incident to whichthe segmental portion of the lever12 is adjusted to separate the teeth 18rand 19 whereupon the springfunctions to shift the lever 12 to normal'pos'ition and the brake incontacting engagement withthe flange of the turntable,.thereby stoppingthe machine. Mounted upon the base plate 10 is a slotted lug adjustabletoward and away from the latch element 14'and adapted to bepositioned'to limit the outward swinging movement of the latch element,the lug 26 being held fixed upon the base of a set screw 27 g While itis believed that/from the foregoing description the nature andadvantages of the invention will be bettei understood, I desire tohaveit understood that I do not limit myself to the details herein shownand described, and that such changes may be re sorted to when desiredasfall within the scope of what is claimed "What I claim is 7- 1. Anautomatic stop for talking. ma chin'es comprising a lever pivotedbeneath the record table, a brake supported -by said lever and normallyengaging the table, a pivoted latch cooperating with said lever tomaintain the brake spaced from said table, a resilient connectionbetween said lever and latching element and a finger fitted on saidlatch element and adapted to be positionedin'the path of movement of thetone arm of the machine, and actuated thereby to raise the lever from sid'latch'element. 1.

' 2; An automatic stop for talking machines 'comprising a lever pivotedbeneath the record table, a brake carried by said lever and normallyengagingthe table, a pivoted latch element cooperating with the leverforholding the brakespace'd from said table, a resilient connection betweensaid lever and "said latchelement, a finger pivoted 'upon the latchelement and adapted to bereaved by said lever to a po'sit'ion in theplate 10 by meanspathrof movement of the tone arm of the machine,whereby the finger is actuated to release the lever from said latchelement.

3. An automatic stop for talking machines comprising alever pivotedbeneath the record table, a brake carried by the lever and normallyengaging said table, a pivot-ed latch element cooperating with the leverto holdthe latter in an adjusted position said finger and movedaway fromthe lever when the latter is moved in one direction, an adjustable stoplimiting the movement *o'fthe latch element in'one, direction, the saidfinger being actuated by'the tone arm of the machine to effect a releaseof the lever from said latch element. 7

4. An automatic stop for talking machines comprising a'lever pivotedbeneath the record table, a brake supported by the lever and normallyengaging said table, a latch element pivoted adjacent the lever andcooperating therewith to hold the latter in an adjusted position and thebrakespacet lease of the lever from said latch element when said fingeris again brought into contact with said pin; 1 I v 5. An automatic stopfor talking machines comprising a lever pivoted beneath the recordtableand having a segmental portion, a brake carried by the lever andnormally contacting said'table, a toothprofrom the table, a resilientconnection bejecting from said lever, a latch element piv- V otedadjacent the lever-and curved to conform to the shape of the segmentalportion, a tooth projecting from the latch element and adapted'to engagethe tooth of the lever to hold the lever in one position with the brakespaced fromithe table, a resilient connectionbetween the leverand saidlatch ele- 'ment, a finger'pivoted upon the latch element to movesaidlever to its set position in the path of movement of the tone arm ofthe machine, said finger being actuated by'the tone arm and cooperatingwith means on the lever to effect a release oflthe'latterfrom the latchelement when thefinger assumes a'predetermined position. i i V Intestimony whereofI a'ffix my -signature. 1" ELZA'EJVI'FORD

